Calcium Fluoride Crystal
Calcium Fluoride (CaF2) crystal has good mechanical strength and good moisture resistance, and a high transmittance in the range of 0.13 to 11.3 um, up to 95%. It is a good window material. The using temperature is below 600 °C in the atmosphere and 800 °C in vacuum drying.
Calcium Fluoride Crystal Physical Properties
|
Material |
CaF2 |
|
Crystal Structure |
Hexagonal |
|
Density(g/cm3) |
3.18 g/cm3 |
|
Melting point |
1360℃ |
|
Index of refraction |
1.39908 at 5mm |
|
Hardness |
158.3（100） |
|
wavelengths |
0.13~11.3mm |
|
Flexible coefficient |
C11=164, C12=53, C44=33.7 |
|
Thermal expansion |
18.85×10-6∕℃ |
Calcium Fluoride Crystal Specification
|
Size |
Special size and orientation are available upon request |
|
Polished |
SSP or DSP |
|
Orientation |
<100>, <110>, <111> |
|
Redirection precision |
±0.5° |
|
Angle of crystalline |
Special size and orientation are avaiable for request |
|
Ra: |
≤5Å（5µm×5µm） |
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